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D3DDDIARG_SETPIXELSHADERCONST structure (d3dumddi.h)

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The D3DDDIARG_SETPIXELSHADERCONST structure describes how to set the pixel shader constant registers.

Syntax

typedef struct _D3DDDIARG_SETPIXELSHADERCONST {
  [in] UINT Register;
  [in] UINT Count;
} D3DDDIARG_SETPIXELSHADERCONST;

Members

[in] Register

The index of the first pixel shader constant register whose value is set.

[in] Count

The number of constant registers to set and, therefore, the number of values in the array that is passed in the pRegisters parameter in the call to the user-mode display driver's SetPixelShaderConst, SetPixelShaderConstI, or SetPixelShaderConstB function.

Remarks

The Count member specifies the following values, depending on the structure type that is used in the call to the SetPixelShaderConst, SetPixelShaderConstI, or SetPixelShaderConstB function:

  • Four-element, single-precision float vectors for the D3DDDIARG_SETPIXELSHADERCONST structure in the SetPixelShaderConst call.
  • Four-integer vectors for the D3DDDIARG_SETPIXELSHADERCONSTI structure in the SetPixelShaderConstI call.
  • Boolean values for the D3DDDIARG_SETPIXELSHADERCONSTB structure in the SetPixelShaderConstB call.
The preceding structures are identical, as the following definitions show: 
typedef D3DDDIARG_SETPIXELSHADERCONST D3DDDIARG_SETPIXELSHADERCONSTI;
typedef D3DDDIARG_SETPIXELSHADERCONST D3DDDIARG_SETPIXELSHADERCONSTB;

Requirements

Requirement Value
Minimum supported client Available in Windows Vista and later versions of the Windows operating systems.
Header d3dumddi.h (include D3dumddi.h)

See also

SetPixelShaderConst

SetPixelShaderConstB

SetPixelShaderConstI